<template>

  <div class="app-container">
    <h2 style="text-align: center;">发布新视频</h2>
    <el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写作品基本信息"/>
      <el-step title="填写作品内容"/>
      <el-step title="提交审核"/>
    </el-steps>

    <el-button type="text" @click="openDialogC()">添加章节</el-button>
<!-- 章节 -->
<ul class="chanpterList">
    <li v-for="chapter in ChapterList" :key="chapter.id">
        <p>{{ chapter.title }}
            <span class="acts">
                <el-button type="text" @click="openDialogV(chapter.id)">添加小节</el-button>
                <el-button style="" type="text" @click="openEdit(chapter.id)">编辑</el-button>
                <el-button type="text"  @click="remove(chapter.id)">删除</el-button>
            </span>
        </p>

        <!-- 视频 -->
        <ul class="chanpterList videoList">
            <li v-for="video in chapter.children" :key="video.id">
                <p>{{ video.title }}
                    <span class="acts">
                        <el-button type="text" @click="openEditVideo(video.id)">编辑</el-button>
                        <el-button type="text" @click="removeVideo(video.id)">删除</el-button>
                    </span>
                </p>
            </li>
        </ul>
    </li>
</ul>
    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">上一步</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>
      </el-form-item>
    </el-form>
<!-- 弹窗：添加和修改章节表单 -->
<el-dialog :visible.sync="dialogChapterFormVisible" title="添加章节">
    <el-form :model="chapter" label-width="120px">
        <el-form-item label="章节标题">
            <el-input v-model="chapter.title"/>
        </el-form-item>
        <el-form-item label="章节排序">
            <el-input-number v-model="chapter.sort" :min="0" controls-position="right"/>
        </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
        <el-button @click="dialogChapterFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveOrUpdate">确 定</el-button>
    </div>
</el-dialog>

<!-- 弹窗：添加和修改集数表单 -->
<el-dialog :visible.sync="dialogVideoFormVisible" title="添加集数">
  <el-form :model="video" label-width="120px">
    <el-form-item label="集数标题">
      <el-input v-model="video.title"/>
    </el-form-item>
    <el-form-item label="集数排序">
      <el-input-number v-model="video.sort" :min="0" controls-position="right"/>
    </el-form-item>
    <el-form-item label="是否设置限制观看">
      <el-radio-group v-model="video.isFree">
        <el-radio :label="true">受限</el-radio>
        <el-radio :label="false">正常</el-radio>
      </el-radio-group>
    </el-form-item>

<el-form-item label="上传视频">
    <el-upload
           :on-success="handleVodUploadSuccess"
           :on-remove="handleVodRemove"
           :before-remove="beforeVodRemove"
           :on-exceed="handleUploadExceed"
           :file-list="fileList"
           :action="BASE_API+'/vod/video/upload'"
           :limit="1"
           class="upload-demo">
    <el-button size="small" type="primary">上传视频</el-button>
    <el-tooltip placement="right-end">
        <div slot="content">最大支持1G，<br>
            支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
            GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
            MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
            SWF、TS、VOB、WMV、WEBM 等视频格式上传</div>
        <i class="el-icon-question"/>
    </el-tooltip>
    </el-upload>
</el-form-item>

</el-form>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogVideoFormVisible = false">取 消</el-button>
    <el-button :disabled="saveVideoBtnDisabled" type="primary" @click="saveOrUpdateVideo">确 定</el-button>
  </div>
</el-dialog>

</div>
</template>

<script>
import chapter from '@/api/chapter'
import video from '@/api/video'
export default {
  data() {
    return {
      saveBtnDisabled: false,
      saveVideoBtnDisabled:false,
      courseId:'',
      ChapterList:[],
      chapter:{
        title:'',
        sort:0
      },
      video:{
        title: '',
        sort: 0,
        isFree: 0,
        videoSourceId: '',
        videoOriginalName:''
      },
      dialogChapterFormVisible:false,
      dialogVideoFormVisible:false,
      fileList:[],
      BASE_API:process.env.VUE_APP_BASE_API
    }
  },

  created() {
    //获取路由id值后查询
    if(this.$route.params && this.$route.params.id){
        this.courseId=this.$route.params.id
        this.getChapterAndVideo()
    }else{
        this.$confirm('在创建番剧前无法修改章节', '提示', {
                confirmButtonText: '确定',
                type: 'warning',
                showClose:false,
                showCancelButton:false,
                closeOnClickModal:false,
                closeOnPressEscape:false,
                closeOnHashChange:false
        }).then(() => {
        this.$router.push({ path: '/course/info'})
            }).catch(()=>{})
    }
  },

  methods: {
    //删除视频前提示
    beforeVodRemove(file,fileList){
       return this.$confirm(`此操作将删除${file.name}, 是否继续?`, '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
        }).catch(()=>{})
    },
    //调用接口删除视频,清空上传列表和视频id/名称
    handleVodRemove(){
      video.deleteVideo(this.video.videoSourceId)
      .then(response=>{
        this.$message({
          type: 'success',
          message: '视频删除成功!'
          });
          this.fileList=[],
          this.video.videoSourceId='',
          this.video.videoOriginalName=''
      })
    },
    //成功回调
    handleVodUploadSuccess(response, file, fileList) {
      this.video.videoSourceId = response.data.videoId
      this.video.videoOriginalName = file.name
    },
    //视图上传多于一个视频
    handleUploadExceed(files, fileList) {
      this.$message.warning('想要重新上传视频，请先删除已上传的视频')
    },
    //获取章节和小节列表
    getChapterAndVideo(){
      chapter.getChapter(this.courseId)
      .then(response=>{
        this.ChapterList=response.data.videos
      })
    },
    saveOrUpdate(){
      if(!this.chapter.id){
        this.saveChapter()
      }else{
        this.updateChapter()
      }
    },
    //显示弹窗,添加章节,刷新页面
    saveChapter() {
      this.chapter.courseId=this.courseId
      chapter.addChapter(this.chapter)
      .then(response=>{
        this.dialogChapterFormVisible = false
        this.$message({
          type:'success',
          message:'添加章节成功',
        })
        this.getChapterAndVideo()
      })
    },
    //显示弹窗,更新章节,刷新页面
    updateChapter() {
      chapter.updateChapterInfo(this.chapter)
      .then(response=>{
        this.dialogChapterFormVisible = false
        this.$message({
          type:'success',
          message:'修改小节成功',
        })
        this.getChapterAndVideo()
      })
    },
    saveOrUpdateVideo(){
      if(!this.video.id){
        this.saveVideo()
      }else{
        this.updateVideo()
      }
    },
    //显示弹窗,添加小节,刷新页面
    saveVideo() {
      this.video.courseId=this.courseId
      video.addVideo(this.video)
      .then(response=>{
        this.dialogVideoFormVisible = false
        this.$message({
          type:'success',
          message:'添加小节成功',
        })
        this.getChapterAndVideo()
      })
    },
    //显示弹窗,更新小节,刷新页面
    updateVideo() {
      video.updateVideo(this.video)
      .then(response=>{
        this.dialogVideoFormVisible = false
        this.$message({
          type:'success',
          message:'修改章节成功',
        })
        this.getChapterAndVideo()
      })
    },
    //打开章节弹窗+初始化
    openDialogC(){
      this.dialogChapterFormVisible =true
      this.chapter.title=''
      this.chapter.sort=0
    },
    //打开小节弹窗+初始化
    openDialogV(chapterId){
      this.dialogVideoFormVisible =true
      this.video={
        title: '',
        sort: 0,
        isFree: 0,
        videoSourceId: ''
      }
      this.video.chapterId=chapterId
    },
    //编辑+数据回显
    openEdit(chapterId){
      this.dialogChapterFormVisible =true
      chapter.getChapterInfo(chapterId)
      .then(response=>{
        this.chapter=response.data.chapter
      })
    },
    //删除章节
    remove(chapterId){
        this.$confirm('此操作将永久删除该章节, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
        }).then(() => {
            chapter.removeChapter(chapterId)
                .then(response => {
                this.$message({
                type: 'success',
                message: '章节删除成功!'
                });
                this.getChapterAndVideo()
                })
            }).catch(()=>{})
    },
    //编辑小节+数据回显
    openEditVideo(id){
      this.dialogVideoFormVisible =true
      video.getVideo(id)
      .then(response=>{
        this.video=response.data.video
      })
    },
    //删除小节
    removeVideo(id){
        this.$confirm('此操作将永久删除该小节, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
        }).then(() => {
            video.removeVideo(id)
                .then(response => {
                this.$message({
                type: 'success',
                message: '小节删除成功!'
                });
                this.getChapterAndVideo()
                })
            }).catch(()=>{})
    },
    previous() {
      this.$router.push({ path: '/course/info/'+this.courseId })
    },

    next() {
      this.$router.push({ path: '/course/publish/'+this.courseId })
    }
  }
}
</script>
<style scoped>
.chanpterList{
    position: relative;
    list-style: none;
    margin: 0;
    padding: 0;
}
.chanpterList li{
  position: relative;
}
.chanpterList p{
  /* float: left; */
  font-size: 20px;
  margin: 10px 0;
  padding: 10px;
  height: 70px;
  line-height: 50px;
  width: 100%;
  border: 1px solid #DDD;
}
.chanpterList .acts {
    float: right;
    font-size: 14px;
}

.videoList{
  padding-left: 50px;
}
.videoList p{
  /* float: left; */
  font-size: 14px;
  margin: 10px 0;
  padding: 10px;
  height: 50px;
  line-height: 30px;
  width: 100%;
  border: 1px dotted #DDD;
}

</style>
